ADA Standards for Accessible Design
From the Department of Justice. PDF and HTML formats.
ControlTrends was created to provide HVAC and Industrial Controls professionals a place to learn and share information about the rapidly changing world of commercial and industrial controls. We have included product demonstrations, training videos, technical blogs and news about the issues that affect the controls professional.
Full text of all IEEE (institute of Electrical and Electronics Engineers) and IEE (Institution of Electrical Engineers) journals and conferences back to 1988 with select content back to 1893.
National Institute of Standards & Technology (NIST)
Provides easy access to many (currently over 80) of the NIST scientific and technical databases.